Joselito vagabundo (1966)

Rene, a street urchin, is coerced by the head of a gang of thieves, Frank, who wants to force him to remain in their organization. One day, Rene meets Anita, a young aristocrat to whom Frank attempted to rob. And because she feels sympathy for him, the boy will have the opportunity to change his life and leave the country to make a deal with a rich heir, Fernando de Ponce, which proposes Rene to supplant him before his old aunt, who does not know him.